live from capitol hill, steve handelsman, news4. >>> steve, thank you. now, for more on the scandal involving the former cia director, nbc's pete williams joins us now. there's so many developments in so many different directions in this story. what's happened today? >> well, today we learned general petraeus will in fact testify before the senate about what happened in benghazi. it will be in a closed session. we're told actually he volunteered to do it. the senate said they wanted to hear from him, but his friends say he called the cia, called his associates there and said i do want to testify. today the director of the fbi and his deputy director went up and talked to some members of congress about why the fbi did not inform them or the white house, while this investigation was still going on. the fbi insisted from the beginning that there are clear rules about when you tell other people what you're finding out in the middle of an investigation. they said that involves only intelligence activities, and that they were satisfied from their investigation